Ok. I left the routerborad in 4.1 and I sent the support.rif to support@mikrotik.com. I hope not to delay and give me a solution.
Thanks for everything.

Thanks andrescamino. I'll try again by turning up the firmware console. The support ticket where I do it? from the same computer or the web mikrotik Just one more question ... If I paid a level 5 team and get on routeros5 would have to pay anything? or I recommend you leave it in routeros4. Thank yo...

Hi, I have a licensed RB511 level 5 and I upgraded to 5.0 rc1. When I restarted the routerboard has made me a message ... The license lasts for 24 hours. I registered in www.mikrotik.com and I've put a demo key. But I do not detect the wlan interface. Looking at the setup I have seen license winbox ...